package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.QueryTimeoutException;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    private AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    private CategoryDao categoryDao;

    @Autowired
    private AttrGroupDao attrGroupDao;

    @Autowired
    private CategoryService categoryService;

    // 获取当前分组没有关联的所有属性
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属分类里面的所有属性
        //先查询出当前分组所属的分类
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();

        //2、当前分组只能关联别的分组没有引用的属性
        //2.1根据分类id获取当前分类下的所有分组ids
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(
                new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> attrGroupIds = attrGroupEntities.stream().map(attrGroupEntity1 -> {
            return attrGroupEntity1.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2计算当前分类下的所有分组下的所有属性Ids
        List<AttrAttrgroupRelationEntity> relationEntities =
                attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .in("attr_group_id", attrGroupIds));
        List<Long> attrIds = relationEntities.stream().map((relationEntity) -> {
            return relationEntity.getAttrId();
        }).collect(Collectors.toList());
        // 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId)
                .eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());

        if(attrIds != null && attrIds.size() > 0){
            wrapper.notIn("attr_id",attrIds);
        }
        // 模糊查询
        String key = (String)params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
               w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        return new PageUtils(page);
    }

    @Override
    public List<Long> querySearchTypeAttr(List<Long> attrIds) {
        return baseMapper.querySearchTypeAttr(attrIds);
    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {

        List<AttrAttrgroupRelationEntity> relationEntities =
                attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_group_id", attrgroupId));

        List<Long> attrIds = relationEntities.stream().map((entity) -> {
            return entity.getAttrId();
        }).collect(Collectors.toList());

        List<AttrEntity> attrEntities = null;

        if(attrIds!=null){
             attrEntities = this.baseMapper.selectBatchIds(attrIds);
        }

        return attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrGroupRelationVo> relationVos = Arrays.asList(vos);

        List<AttrAttrgroupRelationEntity> entities = relationVos.stream().map((relationVo) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(relationVo, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());

        //根据attrId,attrGroupId批量删除关联关系
        attrAttrgroupRelationDao.deleteBatchRelation(entities);

    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);

        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){

            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            attrAttrgroupRelationDao.update(relationEntity, new
                    QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

        }

        /** 判断是新增还是修改
        Long count = attrAttrgroupRelationDao.selectCount(
                new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id", attr.getAttrId()));

        if (count > 0){
            attrAttrgroupRelationDao.update(relationEntity, new
                    QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
        }else{
            attrAttrgroupRelationDao.insert(relationEntity);
        }*/

    }



    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo attrRespVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,attrRespVo);

        //1.设置分组信息
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = attrAttrgroupRelationDao.
                    selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));

            if (attrAttrgroupRelationEntity != null) {
                attrRespVo.setAttrGroupId(attrAttrgroupRelationEntity.getAttrGroupId());
            }
        }

        Long[] catelogPath = categoryService.findCatelogPath(attrEntity.getCatelogId());
        attrRespVo.setCatelogPath(catelogPath);

        return attrRespVo;
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params,
                                       Long catelogId,
                                       String attrType) {

        QueryWrapper<AttrEntity> queryWrapper =
                new QueryWrapper<AttrEntity>().eq("attr_type","base"
                        .equalsIgnoreCase(attrType)?
                        ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():
                        ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        // 如果点击的是三级分类中的某个选项,就添加catelogId这个条件
        if(catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        // 如果填写了关键字就加条件
        String key = (String)params.get("key");

        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        // 对分类数据进行分页
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        // 封装分页数据
        PageUtils pageUtils = new PageUtils(page);

        // 这里还有一个问题是不仅需要返回属性attr的分页数据,还需要返回所属分组的和所属分类的名字,所以遍历下封装的分类数据,再处理

        // 查出新增的属性
        List<AttrEntity> records = page.getRecords();

        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            // AttrRespVo继承了AttrEntity,新加了catelogName分类名称 groupName所属分组名称这两个字段
            AttrRespVo attrRespVo = new AttrRespVo();
            // 属性复制
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            /** -------------------- */
            // 属性和属性分组关系dao 根据属性id查出属性分组数据
            // 因为销售属性没有分组的说法,只有基本属性才有,所以这里改一下
            if("base".equalsIgnoreCase(attrType)) {
                AttrAttrgroupRelationEntity attrgroupRelationEntity =
                        attrAttrgroupRelationDao.selectOne(
                                new QueryWrapper<AttrAttrgroupRelationEntity>()
                                        .eq("attr_id", attrEntity.getAttrId()));
                if (attrgroupRelationEntity != null) {
                    // 根据属性分组id获取属性分组数据
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectOne(new QueryWrapper<AttrGroupEntity>()
                            .eq("attr_group_id", attrgroupRelationEntity.getAttrGroupId()));
                    if (attrGroupEntity != null) {
                        attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectOne(
                    new QueryWrapper<CategoryEntity>().eq("cat_id", attrEntity.getCatelogId()));
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());

        // 把新的数据传送到pageUtils里面
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        System.out.println("attr=" + attr);
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        // 1.保存基本数据
        this.save(attrEntity);
        // 2.保存关联关系
        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationDao.insert(relationEntity);
        }

    }

}